1245020241 has 4 divisors (see below), whose sum is σ = 1660026992. Its totient is φ = 830013492.

The previous prime is 1245020207. The next prime is 1245020251. The reversal of 1245020241 is 1420205421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1245020241 - 2⁷ = 1245020113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245020251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207503371 + ... + 207503376.

It is an arithmetic number, because the mean of its divisors is an integer number (415006748).

Almost surely, 2^1245020241 is an apocalyptic number.

It is an amenable number.

1245020241 is a deficient number, since it is larger than the sum of its proper divisors (415006751).

1245020241 is an equidigital number, since it uses as much as digits as its factorization.

1245020241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415006750.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1245020241 is about 35284.8443527813. The cubic root of 1245020241 is about 1075.7849658161.

Adding to 1245020241 its reverse (1420205421), we get a palindrome (2665225662).

The spelling of 1245020241 in words is "one billion, two hundred forty-five million, twenty thousand, two hundred forty-one".